Student Working Seminar in Groups and Dynamics

Date: October 23, 2019

Time: 1:00PM - 2:00PM

Location: BLOC 628

Speaker: Nóra Gabriella Szőke, Institut Fourier

Title: Extensive Amenability

Abstract: A group action is called amenable if there exists an invariant mean on the space. In this talk I will present a stronger property, namely the extensive amenability of group actions. This property was introduced by Juschenko and Monod, they used it to construct the first examples of finitely generated infinite amenable simple groups. We will discuss some properties of extensive amenability and see an application for topological full groups.